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15-01-2020
Physics

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A girl with mass of 40 kg sits on a sled at rest with a man of 15 kg. What is the kinetic energy of the girl and sled together

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MathPhys MathPhys

15-01-2020

Answer:

0 J

Explanation:

Kinetic energy is:

KE = ½ m v²

where m is mass and v is velocity.

Since the sled is at rest, v = 0 m/s. So KE = 0 J.

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